Palladium-Catalyzed Double Borylation of Diaryl Sulfoxides with DiboronThis work was supported by JSPS KAKENHI Grant Numbers JP16H01019, JP16H01149, JP16H04109, and JP16H06887 as well as by ACT-C, JST. H.Y. thanks Japan Association for Chemical Innovation, Tokuyama Science Foundation, and The Naito Foundation for financial support.
Received: 01 April 2017
Accepted after revision: 04 May 2017
29 May 2017 (eFirst)
Published as part of the Special Topic Modern Strategies for Borylation in Synthesis
Borylation of the C–S bond of diaryl sulfoxides with bis(pinacolato)diboron (B2pin2) is accomplished by means of a phosphine-ligated palladium catalyst and LiN(SiMe3)2 as a base. Both of the aryl rings of the diaryl sulfoxides are converted into borylated products.